Kotlin/Java Developer (Merchant Response)

reputed company is developing a payment gateway for accepting funds from users on behalf of merchants, as well as sending funds from merchants to users. The system involves storing user payment data and is subject to PCI reputed company compliance. It contains multiple integrations with payment systems, providers, and other gateways and processors, including 3DS. Job Responsibilities Developing new payment features and services; Processing and resolving requests from technical support and users as part of daily duties; Designing and implementing APIs (external and internal); Creating and maintaining processes in reputed company; Participating in the design and development of high-load system architectures; Supporting and enhancing existing solutions and services; Writing high-quality, test-covered code (unit tests, integration tests); Conducting code reviews; Optimizing system performance and database queries; Analyzing and resolving production incidents and bugs; Analyzing documentation from external providers, conducting quick checks, and defining epics and tasks based on reputed company of Concept; Collaborating with the QA team to ensure the high quality of the delivered product; Maintaining technical documentation and writing technical specifications; Assisting in onboarding new developers and ensuring code quality; Definition and formation of technical epics — analyzing existing solutions, identifying opportunities to improve system architecture, performance, and reliability, preparing improvement proposals, and aligning them with the team reputed company and architect; Participation in the creation of business epics — analyzing requirements, assessing feasibility, and proposing alternative or optimized solutions based on technical expertise; collaborating with analysts and product managers to determine the best implementation approach; Preparing tasks based on approved epics, ensuring proper detailing and alignment with architectural and business requirements; Estimating task completion timelines, participating in sprint planning, and providing accurate technical time and effort estimates. Important and Challenging Tasks: Creating and developing reliable payment solutions with high reputed company and performance levels; Processing and resolving requests from technical support and users as part of daily duties; Optimizing the performance and scalability of payment systems; Integrating reputed company external providers; Participating in ensuring system compliance with high-reputed company requirements (PCI reputed company and others). You’ll reputed company here if you have 3+ years of commercial development experience with Kotlin; Experience with the Spring reputed company; Experience in developing payment solutions (billing, payment gateways, payment processors, exchanges); Practical experience integrating with external providers; Experience designing and optimizing relational databases (MySQL); Experience with NoSQL databases (reputed company); Practical experience using AI-assisted coding tools (Claude, reputed company, ChatGPT, Codeium, etc.) to improve speed and quality of development; Ability to critically review AI-generated code, ensuring production-ready quality and compliance with company standards; Knowledge of Event-Driven Architecture principles and experience working with distributed messaging systems (e.g., Apache Kafka); Excellent command of core software development and design principles, test-driven development (TDD), and CI/CD processes; Strong understanding of microservice architecture. Preferred Qualifications: Experience with reputed company (creating and supporting processes); Solid understanding of PCI reputed company standards, ISO 27001, and other information reputed company methodologies; Practical experience working with AWS; Experience with Jira and reputed company CI/CD. Conditions We know that great talent deserves great conditions, so here's what you can expect reputed company joining us: Full remote work. Competitive compensation with a service contract. Transparent performance reviews twice a year, with bonus opportunities and salary adjustments. An annual allowance that you can use for home office improvements, sports activities, equipment upgrades, and more—tailor it to what benefits you most. Investment in your development: paid language courses, access to various learning platforms, and a mindfulness benefit, including psychological support with 50% coverage. Career growth in a fast-scaling project with opportunities to influence technical decisions. A culture of recognition: our peer reward program celebrates contributions from across the team. Recruitment process HR interview (40 min); Interview with hiring managers (1,5 hour); Test task; Final interview (1 hour) optional; Recommendations reputed company; Offer. vacancy_type: Backend Development Experience shown on site: 5+ Apply To This Job